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| United States Patent |
6,114,290
|
|
Lyle
, et al.
|
September 5, 2000
|
Detergent composition
Abstract
An aqueous cleansing and oily soil removing composition comprising a
surface active agent and an agent for removing oily soil from skin, in
which the surface active agent and agent for removing oily soil are
separate but combinedly dispensable from a single packaging means as
discrete domains, preferably in a predetermined ratio. Separating the
agent for removing oily soil from the surface active agent results in
improved removal of oily soil from skin, and a clean, fresh feel which is
appreciated by the consumer.
| Inventors:
|
Lyle; Ian Gardner (Buxtehude, DE);
Pereira; Mavis Claire (Bebington, GB);
Williams; Jason Richard (Bebington, GB)
|
| Assignee:
|
Lever Brothers Company, Division of Conopco, Inc. (New York, NY)
|
| Appl. No.:
|
185828 |
| Filed:
|
November 4, 1998 |
Foreign Application Priority Data
| Nov 07, 1997[GB] | 9723643 |
| Nov 07, 1997[GB] | 9723644 |
| Current U.S. Class: |
510/120; 424/401; 510/130; 510/136; 510/139; 510/158; 510/159; 510/404; 510/406; 510/407; 514/844 |
| Intern'l Class: |
C11D 003/20; A61K 007/00 |
| Field of Search: |
510/406,120,136,139,130,158,159,404,407
424/401
514/844
|
References Cited
U.S. Patent Documents
| 3691270 | Sep., 1972 | Charle et al. | 424/401.
|
| 4335103 | Jun., 1982 | Barker et al. | 424/59.
|
| 4348292 | Sep., 1982 | Ginn | 252/90.
|
| 5013473 | May., 1991 | Norbury et al. | 424/452.
|
| 5165917 | Nov., 1992 | Zabotto et al. | 424/70.
|
| 5179128 | Jan., 1993 | Lyle et al.
| |
| 5468496 | Nov., 1995 | Touzan et al. | 424/401.
|
| 5612307 | Mar., 1997 | Chambers et al. | 510/406.
|
| 5929019 | Jul., 1999 | Puwada et al. | 510/406.
|
| Foreign Patent Documents |
| 0468703 | Jan., 1992 | EP.
| |
| 0728475 | Dec., 1995 | EP.
| |
| 6-51615 | Jul., 1994 | JP.
| |
| 81567865 | Jun., 1996 | JP.
| |
| 1038492 | Aug., 1966 | GB.
| |
| 2246363 | Jan., 1992 | GB.
| |
| 2310813 | Sep., 1997 | GB.
| |
| 95/16023 | Jun., 1995 | WO.
| |
| 96/02230 | Feb., 1996 | WO.
| |
| 97/28780 | Aug., 1997 | WO.
| |
Primary Examiner: Douyon; Lorna M.
Attorney, Agent or Firm: Bornstein; Alan A.
Claims
What is claimed is:
1. A cleansing and oily soil removing composition consisting essentially
of:
a) an aqueous domain, free of an oily soil removal agent, containing one or
more surface active agent(s) selected from the group consisting of
anionic, nonionic, amphoteric, and zwitterionic surface active agents,
soap and mixtures thereof; and
b) an aqueous or non-aqueous domain, free of a cleansing surface active
agent, containing one or more agent(s) for removing oily soil, the
nonaqueous domain being in a non-emulsified state; said agents being
selected from the group consisting of polymeric polyols, solid particulate
materials of size greater than 10 microns, polyhydric alcohols, ethanol,
and mixtures thereof;
wherein the domains are greater than 1000 microns in size and are separate
but combinedly dispensable from a single packaging means as discrete
domains.
2. A composition according to claim 1, wherein the single packaging means
comprises two separate compartments.
3. A composition according to claim 1, wherein one of the domains is in
microencapsulated form.
4. A composition according to claim 1, wherein the agent for removing oily
soil is thickened with a thickening agent.
5. A composition according to claim 1 wherein the agent for removing oily
soil is present in an amount from 1 to 70 wt %.
6. A composition according to claim 1 wherein the agent for removing oily
soil is present in an amount from 5 to 50 wt %.
7. A composition according to claim 1, wherein the oily soil is cosmetic
make-up.
8. A composition according to claim 1, wherein the aqueous domain
containing surface active agent is thickened with a thickening agent.
9. A method for improved removal of oily soil from skin by using a cleasing
and oily soil removing liquid composition of claim 1, the method
comprising:
i) dispensing the surface active agent and the agent for removing oily soil
from a packaging means;
ii) applying the surface active agent and the agent for removing oily soil
to the human body; and
iii) removing the resulting mixture of oily soil and cleansing agents by
rinsing with water.
10. A method according to claim 9, wherein the surface active agent and the
agent for removing oily soil are dispensed from the packaging means.
11. A packaged topical composition comprising a cleansing composition
according to claim 1 in a dispensing package.
12. A packaged composition according to claim 11, wherein the package has
two or more compartments.
Description
The present invention relates to detergent compositions suitable for
topical application for cleansing and removing oily soil from the human
body, particularly for removing make-up from the skin, lips, hair, and
nails. In particular, it relates to such compositions which are formulated
to remove make-up effectively while delivering the clean, refreshed skin
feel benefits normally associated with foaming cleansers.
Compositions formulated to remove make-up from the skin are well known.
These generally contain high levels of solvents, such as cosmetic oils,
which are effective in penetrating and dispersing the oily layer of waxes
and pigment particles which constitutes the make-up soil. Such make-up
remover compositions may be designed for wipe-off, for example, using a
cotton pad, or may be designed for rinse-off with water, in which case
they may also contain surfactants to allow co-emulsification of the
make-up base and solvent oil.
However, it is normally found that make-up removers which are thus
formulated as oils or emulsions of water/oil or oil/water type leave the
skin with a greasy after-feel. They also tend to be non-foaming or to
provide very little lather during rinse-off. Consumer preference in the
main is for a clean, refreshed skin feel after cleansing. The desire to
achieve this result, especially when heavy make-up has been worn,
frequently results in following a double cleansing routine.
Conventional foaming cleansers, such as bar soaps, facial washes, bath
foams, shampoos and shower gels, are well known which provide copious
lather on mixing with water, remove light soil (for example sebum) from
the skin surface and leave the skin feeling clean and refreshed. However,
such products tend to be rather poorly effective at removing heavy soil
like make-up.
In recent years, a new class of "2-in-1" cleansers has emerged, which are
claimed to combine the benefits of effective make-up removal with the easy
rinsability, lathering and skin feel attributes normally associated with
foaming cleansers. The failure of these products to win significant market
share is a consequence of the compromises that have had to be made in
their formulation. Thus, known "2-in-1" cleansers which have been derived
from conventional facial foam formulations fail to remove make-up
completely, while those which have been derived from conventional make-up
remover formulations fail to deliver the sensory benefits associated with
thoroughly clean, refreshed skin.
It is also known to formulate another class of "2-in-1" products which
provide both a cleansing and a moisturising benefit. For example WO
96/02230 discloses a composition comprising a surface active agent and a
benefit agent in which the surface active agent and benefit agent are
separate but combinedly dispensable from a single packaging means in a
predetermined ratio as discrete domains. Separating the benefit agent from
the surface active agent is said to result in improved deposition of the
benefit agent. However, whereas WO 96/02230 is concerned with depositing a
substance onto the skin, the present invention achieves the reverse effect
of removing a substance from the skin.
One of the problems which may typically be encountered with such dual
purpose compositions is that they contain an insufficient level of remover
component or an insufficient amount is effectively active in use.
Another problem associated with such dual cleansing and moisturising or
soil-removing compositions is instability. According to WO 94/03152,
concerned with shower gels comprising a non-soap detergent, silicone oil
and cationic polymers, the maximum average droplet size of the silicone
oil that can be used is 2 microns, if product stability is to be
maintained.
We have found a way of formulating such compositions such that they can
deliver effective oily soil removal, while still providing the sensory
benefits associated with foaming cleansers.
Further, we have found that the stability of a dual cleansing and soil
removing product, and delivery and effectiveness of the removal agent can
be improved by providing a composition in which the cleansing and removal
components are separate but combinedly dispensable from a packaging means
as discrete domains.
Thus, according to a first aspect of the invention, there is provided a
cleansing and oily soil removing liquid composition comprising:
a) an aqueous domain containing one or more surface active agents selected
from anionic, nonionic, amphoteric, zwitterionic and cationic surfactants,
soaps and mixtures thereof; and
b) an aqueous or non-aqueous domain containing one or more agents for
removing oily soil, said aqueous or non-aqueous domain being in a
non-emulsified state;
wherein the domains are greater than 1000 microns in size, and are separate
but combinedly dispensable from a single packaging means as discrete
domains.
The composition is suitable for thoroughly cleansing the skin. The removal
agent is included in the composition to remove oily soil, such as make-up
from the skin.
The invention also provides a method for improved removal of oily soil from
the skin by using the aforementioned cleansing and oily soil removing
composition, the method comprising:
i) dispensing the surface active agent and the agent for removing oily soil
from a packaging means;
ii) applying the surface active agent and the agent for removing oily soil
to the human body; and
iii) removing the resulting mixture of oily soil and cleansing agents by
rinsing with water.
In a further embodiment, the invention also provides a packaged cleansing
composition for topical application and use. A suitable package for use in
this embodiment of the invention is preferably a multiple compartment
package, such as a two compartment package.
An advantage of the present invention is that it leads to improved removal
of oily soil by a surface active agent containing aqueous liquid
composition during use. The surface active agent and removal agent are
separated in the composition, and may even not directly contact one
another in the composition. The latter situation allows avoidance of
adverse interactions which may occur between the two components that may
result in ineffective action of the removal agent.
Without being bound by theory, it is believed that the removal agent is
dispersed into relatively large droplets during rubbing-in of the
composition in use, and these droplets readily remove oily soil, such as
make-up, from the skin. By separating the domains of removal agent and
aqueous foaming surfactant, in the case where the former contains
water-immiscible components, it is unnecessary to employ emulsion
technology to prepare the initial composition. It is believed that the
relatively large droplets, formed in situ during rubbing in of the
composition and facilitated by the dispersing of the oily soil removal
phase as a single phase or domain, are more effective than relatively
small emulsion droplets in removing oily soil. Make-up removal may be
enhanced by delivering the effective agents to the make-up film in locally
high concentration. The relatively large droplets are then though to be
reduced in size during use, due to the rubbing action used during
application, thus facilitating their dissolution as a dispersed phase in
the aqueous surfactant phase of the composition.
The invention offers additional advantages not necessarily related to
efficacy, as such, but more related to the problems of avoiding
formulation instability and delivering other consumer benefits, which
include:
(a) incompatibility of formulation ingredients, which might lead to
instability and separation during storage, can be avoided by partitioning
the ingredients into different domains; when, for example, high levels of
polyethylene glycols are preferred constituents of the removal agent,
phase separation of aqueous surfactant can be avoided by formulating all
or most of the polyethylene glycol into the other, oily soil removing,
domain.
(b) two structuring systems may be used to provide optimal product
viscosity, consumer feel and appearance, for each domain, with the
structuring systems being more closely adapted to the requirements of each
domain;
(c) two preservative systems may be used for optimal stability for each
domain, with the preservative systems being more closely adapted to the
requirements of each domain;
(d) similarly, two dye/pigment systems for each domain may be used to
convey a consumer benefit, for example to reinforce the concept that the
product is an effective and true 2-in-1 product;
(e) formulation ingredients may be kept in separate domains until use when
they may react to give a consumer-perceivable sensation, for example heat
generation, change in viscosity or appearance;
(f) any UV-light sensitive material may be kept in only one chamber with UV
filtering ability, thus allowing a cost saving on quantity of such UV
filtering packaging; and
(g) use of multiple chamber packaging rather than a single chamber may
reduce path length of light through the product, thus improving apparent
clarity.
The surface active agent to be contained in the aqueous domain of the
composition may be selected from any known surfactants suitable for
topical application to the human body. Mild surfactants, i.e. surfactants
which do not damage the stratum corneum, the outer layer of skin, are
particularly preferred.
One preferred anionic detergent is fatty acyl isethionate of formula:
RCO.sub.2 CH.sub.2 CH.sub.2 SO.sub.3 M
where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a
solubilising cation such as sodium, potassium, ammonium or substituted
ammonium. Preferably at least three quarters of the RCO groups have 12 to
18 carbon atoms and may be derived from coconut, palm or a coconut/palm
blend. Another preferred anionic detergent is alkyl ether sulphate of
formula:
RO(CH.sub.2 CH.sub.2 O).sub.n SO.sub.3 M
where R is an alkyl group of 8 to 22 carbon atoms, n ranges from 0.5 to 10
especially from 1.5 to 8, and M is a solubilising cation as before.
Other possible anionic detergents include alkyl glyceryl ether sulphates,
sulphosuccinates, taurates, sarcosinates, sulphoacetates, phosphates,
phosphate esters and ethoxylated phoshates; and acyl lactylates,
glycinates, alaninates and glutamates; and mixtures thereof.
Sulphosuccinates may be monoalkyl sulphosuccinates having the formula:
R.sup.5 O.sub.2 CCH.sub.2 CH(SO.sub.3 M)CO.sub.2 M; and amido-MEA
sulphosuccinates of the formula: R.sup.5 CONHCH.sub.2 CH.sub.2 O.sub.2
CCH.sub.2 CH(SO.sub.3 M)CO.sub.2 M; wherein R.sup.5 ranges from C.sub.8
-C.sub.20 alkyl, preferably C.sub.12 -C.sub.15 alkyl and M is a
solubilising cation.
Sarcosinates are generally indicated by the formula: R.sup.5
CON(CH.sub.3)CH.sub.2 CO.sub.2 M, wherein R.sup.5 ranges from C.sub.8
-C.sub.20 alkyl, preferably C.sub.12 -C.sub.15 alkyl and M is a
solubilising cation.
Taurates are generally identified by the formula: R.sup.5 CONR.sup.6
CH.sub.2 CH.sub.2 SO.sub.3 M, wherein R.sup.5 ranges from C.sub.8
-C.sub.20 alkyl, preferably C.sub.12 -C.sub.15 alkyl, R.sup.6 ranges from
C.sub.1 -C.sub.4 alkyl, and M is a solubilising cation.
Amino acid surfactants include acyl alaninates, acyl glycinates and acyl
glutamates identified by the formulae:
Alaninates:
##STR1##
where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a
solubilising cation such as sodium, potassium, ammonium or substituted
ammonium. Acyl alaninates may be derived from L-alanine:
##STR2##
or from .beta.-alanine:
##STR3##
Glycinates:
##STR4##
where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a
solubilising cation such as sodium, potassium, ammonium or substituted
ammonium.
Glutamates:
##STR5##
where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a
solubilising cation such as sodium, potassium, ammonium or substituted
ammonium.
Harsh surfactants such as primary alkane sulphonate or alkyl benzene
sulphonate will generally be avoided.
If the surface active agent comprises soap, the soap is preferably derived
from materials with a C.sub.8 to C.sub.22 substantially saturated carbon
chain and, preferably, is a potassium or triethanolamine soap with a
C.sub.12 to C.sub.18 carbon chain.
Suitable nonionic surface active agents include alkyl polysaccharides,
lactobionamides, ethyleneglycol esters, glycerol monoethers,
polyhydroxyamides (glucamide), primary and secondary alcohol ethoxylates,
especially the C.sub.8-20 aliphatic alcohols ethoxylated with an average
of from 1 to 20 moles of ethylene oxide per mole of alcohol.
Suitable amphoteric surface active agents include derivatives of alkyl
hydroxyethyl imidazolines such as alkylamphoacetates,
alkylamphopropionates, alkylamphodiacetates and alkylamphodipropionates
identified by the formulae:
##STR6##
where R is an alkyl or alkenyl group of 8 to 20 carbon atoms, n is 1 or 2,
and M is a solubilising cation such as sodium, potassium, ammonium or
substituted ammonium.
Mixtures of any of the foregoing surface active agents may also be used.
The surface active agent is preferably present in the overall composition
at a level of from 5 to 40 wt %, more preferably 10 to 25 wt %.
It is also preferable that the composition includes from 1 to 10 wt % of a
cosurfactant agent with foam boosting or skin-mildness benefits. Suitable
materials are zwitterionic detergents which have an alkyl or alkenyl group
of 7 to 18 carbon atoms and comply with an overall structural formula:
##STR7##
where R.sup.1 is alkyl or alkenyl of 7 to 18 carbon atoms R.sup.2 and
R.sup.3 are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to
3 carbon atoms;
m is 2 to 4;
n is 0 or 1;
X is alkylene of 1 to 3 carbon atoms optionally substituted with hydroxyl;
and
Y is -CO.sub.2.sup.- or -SO.sub.3.sup.-.
Zwitterionic detergents within the above general formula include simple
betaines of formula:
##STR8##
and amido betaines of formula:
##STR9##
where m is 2 or 3.
In both formulae R.sup.1, R.sup.2 and R.sup.3 are as defined previously.
R.sup.1 may, in particular, be a mixture of C.sub.12 and C.sub.14 alkyl
groups derived from coconut so that at least half, preferably at least
three quarters, of the group R.sup.1 has 10 to 14 carbon atoms. R.sup.2
and R.sup.3 are preferably methyl.
A further possibility is a sulphobetaine of formula:
##STR10##
where m is 2 or 3, or variants of these in which -(CH.sub.2).sub.3
SO.sub.3.sup.- is replaced by
##STR11##
R.sup.1, R.sup.2 and R.sup.3 in these formulae are as defined previously.
The removal agents used in compositions according to the invention may
comprise straight or branched chain hydrocarbons (for example mineral oil,
isohexadecane), esters (for example isopropyl palmitate), silicones (for
example cyclomethicone), natural or synthetic triglycerides (for example
castor oil, sunflower oil, macadamia nut oil, glyceryl
tri(2-ethylhexanoate)) and plant extracts (for example Witch hazel,
Cornflower extract).
However, preferably the removal agent may comprise:
a) polymeric polyols such as polyethylene glycols (for example PEG
200-600);
b) polyhydric alcohols such as propylene glycol, glycerol and sorbitol;
c) solid particulate materials of size greater than 10 microns such as
micronised polyethylene or silica;
d) solvents such as ethanol;
e) nonionic surface active agents having HLB numbers<10; and
f) mixtures thereof.
Particularly preferred removal agents include PEG-400 and glycerol.
The domain comprising the removal agent may also contain water, in an
amount from 0 to 70%. It may also contain one or more hydrophilic surface
active agents which are included to facilitate formation of an
oil-in-water emulsion during the final rinsing step, provided that such an
emulsion is not present in the formulated domain.
The removal agent is preferably present in the overall composition in an
amount of from 1 to 70 wt %, most preferably from 5 to 50 wt %.
Other possible optional ingredients include structurants or thickeners,
which may be added to either or both phases of the composition to maintain
stability during storage and provide appropriate viscosity during
dispensing and use.
Suitable materials for structuring the aqueous foaming surfactant phase
include electrolytes which may induce changes in size or geometry of
surfactant micelles; water soluble polymers which are tolerant to
surfactants; and inorganic materials such as clays or amorphous silica.
The choice of preferred thickeners for the second phase comprising the
removal agent depends on whether this phase is aqueous or non-aqueous (for
example, whether it is oil or polyol based). Suitable thickeners for
aqueous or polyol-based phases include hydrophilic polymers; inorganic
materials and mixtures thereof. Suitable thickeners for oil-based phases
include oil soluble polymers, waxes, and inorganic materials, particularly
those which are hydrophobically modified.
Further examples of structurants and thickeners are given in the
International Cosmetic Ingredient Dictionary, Fifth Edition, 1993,
published by CTFA (The Cosmetic, Toiletry & Fragrance Association),
incorporated herein by reference.
Other typical components of such compositions may preferably include
opacifiers, preferably 0.05 to 0.5 wt %; preservatives, preferably 0.05 to
1.0 wt %; and perfumes, preferably 0.1 to 0.5 wt %.
In relation to the physical presentation of compositions according to the
invention, it is an essential feature of the invention that the oily soil
removing solution and aqueous foaming surfactant solution are separate but
combinedly dispensable from a packaging means. Typically, the latter may
be a single packaging means. Such a packaging means includes those systems
which comprise two or more separate compartments. A wide variety of such
packaging means are known in the art, including dual compartment pump
dispensers and double tubes which may be configured with the compartments
side-by-side or with one inside the other. Particular examples include the
multi-cavity dispensing container described in U.S. Pat. No. 5,020,694 and
the multi-chamber tube described in U.S. Pat. No. 4,964,539.
Preferably the aqueous surface active agent and the removal agent may be
dispensable from a single packaging means, for example in a predetermined
ratio according to the use for which the composition is intended. An
advantage of dispensing the surface active agent and removal agent in
combination is that it avoids the inconvenience of having to post-mix the
two components. This is particularly advantageous when the separate
components of a composition need to be mixed in precise ratios in order to
achieve the desired effect.
Although in the preferred situation, the single packaging means may
comprise dual-compartments, wherein the aqueous surface active agent and
oily soil removal agent are separately contained, a greater number of
compartments is possible, and even a unitary compartment system can be
envisaged.
For example, in a unitary system, the discrete domains of the composition
of the invention may be realised as separate stripes of surface active
agents and of removal agent, or as droplets of one agent suspended in the
other, optionally in encapsulated form.
Another method of ensuring that the surface active agent and removal agent
are separate involves filling of the separate domains of the composition
into a single chamber pack by coextrusion or injection, such that
suspended droplets or a striped product is produced in which individual
stripes or droplets contain either the surface active agent or removal
agent.
Compositions of the invention may be formulated as products for washing the
skin, for example, facial or hand washing compositions; bath or shower
gels; or products for washing the hair.
The compositions of the invention generally may be pourable liquids or
semi-liquids e.g. gels or pastes
The invention will be further illustrated by reference to the following
non-limiting examples.
EXAMPLE 1
The following two formulations were prepared, constituting the two domains
of the cleansing composition:
(a) Aqueous surfactant solution (Raw materials 100% active unless otherwise
specified)
______________________________________
Chemical name Trade name/Supplier
Wt %
______________________________________
KMAP/DAP + minors
Priori B300D (29% a.i + 9%
99.95
minors)/Kao
Dye/Pigment Patent Blau V80/Hoechst
0.0001
5-Chloro-2-methyl-4-
Kathon CG/Rohm and Haas
0.05
isothiazolin-3-one and
2-methyl-4-isothiazolin-3-
one
(1.5% aq.sol.)
______________________________________
Manufacture: To Priori B-300D the preservative was first added and mixed.
The dye/pigment was then added and mixed.
(b) Oily soil remover
______________________________________
Chemical name
Trade name/Supplier Wt %
______________________________________
Mono-isopropanolamine
Zetesol 856/Zschimmer & Schwarz
16.00
laureth sulphate (2 Eo)
Laureth-4 Brij 30/Sigma 6.00
Coco monoethanolamide
Empilan CME/Albright and Wilson
5.50
Precipitated silica
Sorbosil TC15/Crosfield
12.00
Perfume Phoenix 3000 OPTFW/Givaudan
0.10
5-Chloro-2-methyl-4-
Kathon CG/Rohm and Haas
0.05
isothiazolin-3-one and
2-methyl-4-
isothiazolin-3-one
(1.5% aq.sol.)
Titanium dioxide
Tiona AG/SCM 2.00
Macadamia Nut Oil
Macadamia Nut Oil/Jan Dekker
58.35
______________________________________
Manufacture: Macadamia nut oil, Brij 30 and Zetesol 856 were first mixed
and heated to 80 degrees C. Sorbosil TC15 was added and mixed under
vacuum. Pre-melted Empilan CME was added over the top and mixed in.
Titanium dioxide was then added and mixed. After cooling to room
temperature the perfume and preservative were added and mixed in.
The package used in this example was a dual compartment pump dispenser of
the type described in U.S. Pat. No. 5,020,694, incorporated herein by
reference. Such a dispenser comprises two hollow and separate parallel
cylinders, these having one end generally closed and the other end
telescopically and slidingly accommodating two parallel pistons which
conform to ride sealingly along the interior walls of said cylinders so as
to force the liquid products contained therein to flow towards said first
ends of the cylinders upon relative compression of the cylinders and
pistons. The cylinders are provided with outlet channels communicating
with an outlet means having adjacent outlet openings and means for causing
the liquid products to flow towards each other at the outlet openings to
form a single, banded, unmixed stream of the products. The aqueous
surfactant solution and oily soil removing solution were filled into the
parallel chambers of the dispenser such that the total composition in the
dispenser comprised, by volume, 50% remover solution and 50% aqueous
surfactant solution.
EXAMPLE 2
(a) Aqueous surfactant solution (raw materials approx. 100% active unless
otherwise specified)
______________________________________
Chemical Name Trade Name/Supplier
Wt %
______________________________________
Lauryl MAP/DAP (78/22)
Phosten HLP/Nikkol
26.70
Triethanolamine A-900/Shell 13.30
Perfume Pheonix 3000 0.20
OPTFW/Givaudan Roure
5-Chloro-2-methyl-4-isothiazolin-3-
Kathon CG/Rohm &
0.05
one and Haas
2-methyl-4-isothiazolin-3-one (1.5%
aq.sol.)
Water 59.75
______________________________________
Manufacture: The water and lauryl phosphoric acid were mixed together and
heated to 80.degree. C. The acid was neutralised to pH 7.0 with
triethanolamine. After cooling to room temperature, the perfume and
preservative were added with mixing.
(b) Oily soil remover
______________________________________
Chemical Name Trade Name/Supplier
Wt %
______________________________________
Polyethylene glycol 400
PEG 400/Sanyo Kasei
90.00
5-Chloro-2-methyl-4-isothiazolin-
Kathon CG/Rohm & Haas
0.05
3-one and
2-methyl-4-isothiazolin-3-one
(1.5% aq.sol.)
Water 9.95
______________________________________
Manufacture: Water and PEG 400 were mixed together. The preservative was
then added and mixed in.
Formulation domains (a) and (b) were filled separately into the chambers of
a dual compartment pump dispenser of the type described in Example 1
above, so that the final composition comprised equal volumes of the
aqueous surfactant and oily soil remover domains.
When domains (a) and (b) were combined in equal parts, the total
formulation was hazy and quickly phase separated due to flocculation and
loss of viscosity. However, when the formulation ingredients were kept in
their separate domains within the dual chamber pack, the stability problem
was avoided and the materials in both chambers remained transparent.
EXAMPLE 3
(a) Aqueous surfactant solution (raw materials approx 100% active unless
otherwise specified)
______________________________________
Chemical Name Trade Name/Supplier
Wt %
______________________________________
K Lauryl MAP/DAP + minors
Priori B300D (29% a.i. + 9%
88.85
minors) /Kao
Precipitated Silica
Sorbosil TC15/Crosfield
11.00
Perfume Pheonix 3000 OPTFW/Givaudan
0.10
Roure
5-Chloro-2-methyl-4-
Kathon CG/Rohm & Haas
0.05
isothiazolin-3-one and
2-methyl-4-isothiazolin-
3-one (1.5% aq.sol.)
______________________________________
Manufacture: Sorbosil TC15 was added to the Priori B-300D and mixed under
vacuum. Perfume and preservative were then added and mixed in.
(b) Oily soil remover
______________________________________
Chemical Name Trade Name/Supplier
Wt %
______________________________________
Polyethylene glycol 400
PEG 400/Sanyo Kasei
30.00
Glycerol Maruko RG/NOF 30.00
Carbomer Carbopol ETD2020/Goodrich
1.33
Triethanolamine
A-900/Shell 0.38
5-Chloro-2-methyl-4-
Kathon CG/Rohm & Haas
0.05
isothiazolin-3-one and
2-methyl-4-isothiazolin-3-one
(1.5% aq.sol.)
Water 38.24
______________________________________
Manufacture: The Carbopol ETD2020 was dispersed in the water under high
shear mixing. The PEG 400, glycerol and preservative were then added and
mixed in. The solution was then neutralised to pH 7.0 with the
triethanolamine, with continuous stirring under vacuum.
Formulation domains (a) and (b) were filled separately into the chambers of
a dual compartment pump dispenser of the type described in Example 1
above, so that the final composition comprised equal volumes of the
aqueous surfactant and oily soil remover domains.
When domains (a) and (b) were combined in equal parts, the total
formulation was hazy and quickly phase separated due to flocculation and
loss of viscosity. However, when the formulation ingredients were kept in
their separate domains within the dual chamber pack, the stability problem
was avoided and the material in chamber (b) remained transparent while
that in chamber (a) was opaque.
The products dispensed using the formulations in Examples 1, 2 and 3 were
tested against known "2-in-1" cleansers presently on the market, according
to the method of the invention. The inventive compositions provided
substantially increased make-up removal from the skin as well as
delivering a consumer appreciated clean and fresh feel.
EXAMPLE 4
(a) Aqueous surfactant solution (raw materials approx. 100% active unless
otherwise specified)
______________________________________
Chemical name
Trade name/Supplier Wt %
______________________________________
K MAP/DAP + minors
Priori B300D (29% a.i. + 9%
55.75
minors)/Kao
Polyethylene Glycol
Peg 400/Fisher 16.00
400
Precipitated Silica
Neosil CT15/Crosfield 12.00
Glycerol Maruko RG/NOF 16.00
Perfume Pheonix 3000 OPTFW/Givaudan Roure
0.20
5-Chloro-2-methyl-
Kathon CG/Rohm and Haas
0.05
4-isothiazolin-3-
one and 2-methyl-4-
isothiazolin-3-one
(1.5% aq.sol.)
______________________________________
Manufacture: The Priori B-300D, PEG 400 and glycerol were mixed together.
Neosil CT15 was then added and mixed in under vacuum. Finally, the perfume
and preservative were added and mixed in.
(b) Oily soil remover
______________________________________
Chemical Name Trade Name/Supplier
Wt %
______________________________________
Carboxyvinylpolymer
Carbopol Ultrez 10/
0.50
Goodrich
Polyethylene glycol 400
PEG 409/Sanyo Kasei
16.00
Glycerol Maruko RG/NOF 16.00
5-Chloro-2-methyl-4-isothiazolin-
Kathon CG/Rohm & Haas
0.05
3-one and
2-methyl-4-isothiazolin-3-one
(1.5% aq.sol.)
Triethanolamine (90%)
A-900/Shell 0.55
Water Distilled Water 66.90
______________________________________
Manufacture: The Carbopol was first dispersed in the water under high shear
mixing. The glycerol, PEG 400 and preservative were added with stirring to
form a homogeneous dispersion. Mixing was continued under vacuum as
triethanolamine was added to neutralise the solution to pH 7.0.
Formulation domains (a) and (b) were filled separately into the chambers of
a dual compartment pump dispenser of the type described in Example 1
above, so that the final composition comprised equal volumes of the
aqueous surfactant and oily soil remover domains.
The products dispensed using the formulation in Example 4 was additionally
tested against known "2-in-1" cleansers presently on the market, according
to the method of the invention. The composition of the invention provided
substantially increased make-up removal from the skin as well as
delivering a consumer appreciated clean and fresh feel.
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